i bought 4 hens about 2 months ago and they were sneezing. Put them in a pen by themselves and treated them with tetracycline. Thought they were find after a week. Let them go with my other hens. Now i have a few more sneezing as well. So now i am giving them electrolytes for the past 5 days and have not seen any improvements. They just sneeze, but have no running nose. They eat and drink find. They are all running lose outside during the day. I would like to know if i treated them all again with tetracycline would that help. Or is there something else i could try. Tried yogurt, apple cider too.Any advice would be appreciated. These hens are my pets.